Nervous Tissue Location
- The nerve tissue is located in the Peripheral nervous system (PNS) and also the Central nervous system (CNS) formed by the spinal cord and the brain.
- It is responsible for controlling and performing various body activities.
- The nervous tissue includes the nerve cells or the neurons.
Characteristics of Nervous Tissue
- It is composed of various nerve cells.
- The brain is a vital organ.
- The transmission of signals is across neurotransmitters.
- Nervous tissue comprises the CNS and PNS of the nervous system.
- The contains dendrites, cell body, axons, and nerve endings.
- It contains two different cells—neurons and glial cells.
- Nerve cells live long, and cannot be split and replaced (except memory cells).
- The presence of specialization at axonal terminals is called synapsis.
Functions Of Nervous Tissue
- Carries messages from other neurons to the cell body.
- Nervous tissue responds to stimuli.
- It stimulates the contraction of muscles and plays a crucial role in emotions, memory, and seasoning.
- It carries out communication and integration.
- Provides electrical insulations to nerve cells and removes debris.
- Neurons create and carry out nerve impulses. These are responsible for the production of electrical signals that are transmitted across distances, they do so by secreting chemical neurotransmitters.
Neural Tissue
All living organisms are made of cells. A unicellular organism has a single cell in its body, i.e., a single cell performs all basic life activities. However, in multicellular organisms, there are millions of cells. Most of these cells are specialized to carry out only a few functions efficiently. These functions are taken up by a distinct group of cells. Thus, it can be said that there is a division of labor in multicellular organisms.
A tissue is a group of cells that are similar in structure, origin, and function. The term ’tissue’ was given by Bichat. The branch of science dealing with the tissues is called ‘histology’. Mayer introduced the term histology. Malpighi is considered the “founder of histology. Broadly animal tissues are classified into four types: epithelial, connective, muscular, and neural.
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